Characteristics of Lightweight Foamed Concrete Brick Mixed with Fly Ash

International Journal of Civil Engineering

© 2019 by SSRG - IJCE Journal

Volume 6 Issue 3

Year of Publication : 2019

Authors : Seyed Navid Hashem Moniri, Fathoni Usman

10.14445/23488352/IJCE-V6I3P103

How to Cite?

Seyed Navid Hashem Moniri, Fathoni Usman, "Characteristics of Lightweight Foamed Concrete Brick Mixed with Fly Ash," SSRG International Journal of Civil Engineering, vol. 6,  no. 3, pp. 22-28, 2019. Crossref, https://doi.org/10.14445/23488352/IJCE-V6I3P103

Abstract:

Lightweight concrete has become a sweet solution in the construction industry. The foamed concrete brick can be substitute with the normal clay burnt brick, which consumes more energy and carbon footprint. To reduce cement in the foamed concrete, fly ash as a scheduled wastage by-product of the coal-fueled power plant is added into the mixture. This paper presents the development of fly ash mixed with a foamed concrete brick. The samples were prepared with different percentages of fly ash substituting the cement. The compressive test and the flexural test were conducted to evaluate the mechanical properties of the brick. This study's main objective is to evaluate lightweight foamed concrete brick's mechanical properties with flyash, such as compressive strength, flexural strength, and water absorption behavior. It was found that specimens containing 10% fly ash and 10% foam after 28 days of curing in water achieved the highest flexural and compressive strengths by almost 3 MPa and 9.1 MPa, respectively. The study concludes an optimal mix design with 10% fly ash and 10% stable foam to produce lightweight foamed concrete brick with fly ash. Based on the results, the fly ash caused a decrease in water absorption percentage in lightweight foamed concrete.

Keywords:

Brick, Fly ash, Lightweight, Stable foam, strength.

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